Natural variations in the isotopic composition of some 50 chemical elements are now being
used in geochemistry for studying transport processes, estimating temperature …

In solid-state physics and materials science Fick's Law diffusion is a well-established
process. In Earth Sciences, laboratory experiments on garnet, olivine and other anhydrous …

The new generation of multi-collector mass spectrometers (eg ARGUSVI) permit ultra-high
precision (< 0.1%) 40 Ar/39 Ar geochronology of rocks and minerals. At the same time, the …

The magmatic processes that fuel volcanism, crustal growth, ore formation and discharge of
volcanic gases and aerosols to the atmosphere occur across a range of timescales, from …

Arc magmas commonly are mixtures of newly arriving primitive melts, stored magmas at
shallow levels, and xenolithic material added on ascent. Almost every eruption has a unique …

To better understand the role and extent of inter-mineral diffusion during subsolidus
processes, we investigated the iron and magnesium isotopic compositions of olivine …

Igneous and metamorphic rocks exhibit greater isotopic heterogeneity than expected from
equilibrium. Large nonequilibrium isotope effects can arise from diffusion and chemical …

Martian meteorites are the only samples available from the surface of Mars. Among them,
olivine-phyric shergottites are basalts containing large zoned olivine crystals with highly …

Olivine is the most abundant mantle mineral at depths relevant to oceanic crust production
through melting. It is also a liquidus phase for a wide range of mafic and ultramafic magma …

Isotopic fractionation associated with diffusion in crystals is the most reliable means of
understanding the origin of mineral zoning in igneous and metamorphic rocks. We have …